CHAPTER 3,MOLE CONCEPT


Questions

1.Define empirical formula.
2.Write the equation of concentration of a solution.





















Worksheet
1.Find the empirical formula of the following compounds
a)Na =32.40%        O=45.07%       S=22.3%


b) Ag=63.53%         N=8.23%         O=28.24%


c) Ca=71.43%          O=28.57%

2.Calculate the number of moles ;
a)400g of NaOH
3)Calculate the following;

a)percentage of phophorous in H3PO4
b)percentage of magnese in KMnO4

4)Calculate the following;

a) mass of 192 moles of HCl

b)moles in 510g of Al2O3


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